Laboratory Evaluation of Warm-Mix Open Graded Friction Course Mixtures with Sasobit

Qi Yang Zhu; Guang Wei Hu; Ye Mao Zhang; Yuan Zhuang

doi:10.4028/www.scientific.net/AMR.779-780.311

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Laboratory Evaluation of Warm-Mix Open Graded Friction Course Mixtures with Sasobit

Abstract:

This paper is to evaluate the feasibility of using warm mix asphalt (WMA) technology to produce quality open graded friction course (OGFC) mixtures. In the summer of 2012, a field trial project using Sasobit-OGFC was established in the Huanhu East Road project, Changzhou city. In line with the trail field project, the performances of raveling, draindown, rutting resistance and moisture susceptibility are conducted between Sasobit-OGFC mixtures and traditional HMA-OGFC mixtures. The results indicate that the mixing temperature of Sasobit-OGFC mixtures can be reduced by 20°Cwhen compared with that of HMA-OGFC mixtures. The performances of Sasobit-WMA mixtures are no worse than these of HMA-OGFC mixtures. A wider range of paving temperature is found when adding Sasobit into OGFC mixtures, which effectively enhances the quality of pavement construction.